Removal of the Brake Manifold

TASK 32-44-17-000-001-A
Removal of the Brake Manifold

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

ZONE: 744
FIN: 3016GM

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)
No specific	1	CONTAINER 5 L (1.32 USGAL)
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
744	MAIN DOOR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 29-00-00-910-002-A	Safety Procedures of the Hydraulic System
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-23-00-860-001-A	Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 29-32-11-000-004-A	Removal of the Hydraulic Pressure Transducer
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
TASK 32-43-51-000-001-A	Removal of the Alternate Braking Selector Valve
TASK 32-44-11-200-001-A	Functional Check of Parking/Emergency Brake Accumulator by Reading the Charge Pressure on the Accumulator Gauge
TASK 32-44-15-000-001-A	Removal of the Pressure Relief Valve
Alternate Brake Manifold 3016GM ** ON A/C NOT FOR ALL
Alternate Brake Manifold 3016GM ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 32-44-17-860-050-A

A. Aircraft Maintenance Configuration
(1) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
(2) Push the pressure release button on the pressure relief valve 3067GM to depressurize the alternate brake system.
(3) Make sure that the pressure on the gage 2585GM decreases to the fill pressure of the accumulator 2582GM (Ref. AMM TASK 32-44-11-200-001).

Subtask 32-44-17-010-050-A

B. Get Access
(1) Open the right MLG door (Ref. AMM TASK 32-12-00-010-001).

Subtask 32-44-17-869-050-A

C. Disconnection Of the PTU Isolation Coupling
(1) Depressurize the reservoir of the Yellow hydraulic system (Ref. AMM TASK 29-14-00-614-001).
(2) Disconnect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-001).
(3) Put the ACCESS PLATFORM 2M (6 FT) in position.
(4) Put the CONTAINER 5 L (1.32 USGAL) below the manifold 3016GM to collect the hydraulic fluid leakage.

Subtask 32-44-17-865-050-A

D. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	L/G/Y BRK/PRESS/IND	61GG	C10
** ON A/C NOT FOR ALL
49VU	ABCU &/Y BRK/PRESS IND	61GG	C10
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N30
** ON A/C ALL
121VU	HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY	4GG	M36
121VU	HYDRAULIC/BRAKING AND STEERING/SYS2/CTL	3GG	M35
121VU	HYDRAULIC/BRAKING AND STEERING/SYS1/CTL	1GG	M34
121VU	HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY	2GG	M33
121VU	HYDRAULIC/PARK BRK/CTL/STBY	71GG	N37
121VU	HYDRAULIC/PARK BRK/CTL/NORM	70GG	N36
121VU	HYDRAULIC/Y HYD/PUMP ENG2/MONG	3700GD	Q37
121VU	HYDRAULIC/Y HYD/PUMP ENG2/CTL	3701GD	Q36
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N31
** ON A/C ALL
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03

Subtask 32-44-17-941-050-A

E. Safety Precautions
(1) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the Yellow hydraulic system:

On the panel 40VU in the cockpit
On the ground service panel of the Yellow hydraulic system.

Subtask 32-44-17-560-051-A ** ON A/C NOT FOR ALL

F. Component Removal
(1) Remove the pressure relief valve 3067GM (Ref. AMM TASK 32-44-15-000-001).
(2) Remove the hydraulic pressure transducer 3068GN (Ref. AMM TASK 29-32-11-000-004).

Subtask 32-44-17-560-051-B ** ON A/C NOT FOR ALL

F. Component Removal
(1) Remove the pressure relief valve 3067GM (Ref. AMM TASK 32-44-15-000-001).
(2) Remove the hydraulic pressure transducer 3068GN (Ref. AMM TASK 29-32-11-000-004).
(3) Remove the selector valve 99GG (Ref. AMM TASK 32-43-51-000-001).

4. Procedure
Subtask 32-44-17-020-051-B ** ON A/C NOT FOR ALL

A. Removal of the Brake Manifold 3016GM
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Remove the nuts (12) and the washers (14).
(3) Remove the bolts (19), the washers (18) and the top half of the clamp (17).
(4) Disconnect the pipe (1) from the manifold (2).
(5) Disconnect the pipe (5) from the check valve (6).
(6) Disconnect the T-assembly (4) from the manifold (2).
(7) Disconnect the pipes (3) and (8) from the manifold (2)
(8) Disconnect the elbow assembly (9) from the manifold (2).
(9) Put the PLUG-BLANKING in each disconnected line end.
(10) Remove the bolts (10) and the washers (11).
(11) Remove the manifold (2) from the aircraft structure.

Subtask 32-44-17-020-051-C ** ON A/C NOT FOR ALL

A. Removal of the Brake Manifold 3016GM
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Remove the nuts (15) and the washers (16).
(3) Remove the bolts (11), the washers (12) and the top half of the clamp (13).
(4) Disconnect the pipe (1) from the manifold (10).
(5) Disconnect the T-assembly (2) from the manifold (10).
(6) Disconnect the pipe (3) from the check valve (4).
(7) Disconnect the pipe (6) from the manifold (10).
(8) Put the PLUG-BLANKING in each disconnected line end.
(9) Remove the bolts (7) and the washers (8).
(10) Remove the manifold (10) from the aircraft structure.

[Rev.10 from 2021] 2026.04.01 00:49:39 UTC